Abstract
The structural and magnetic properties of Gd-Fe thin films prepared by ionized cluster beam (ICB) technique have been studied by means of Auger analysis, x-ray scattering and ferromagnetic resonance (FMR). Sample preparation was made by simultaneous deposion of Gd and Fe from each crucibles. To investigate the influence of ion on the structure and magnetic properties of films, only Fe clusters were ionized. From Auger analysis, films were found to be uniform over a large surface area (about 5×5cm2). Caluculated reduced density functions G (γ) indicate that Gd-Fe pair is dominant even when 30% of Fe clusters are included. Furthermore, the density of Fe-Fe pairs is fairly small even when neutral clusters alone were deposited, which probably due to the large surface diffusion enegy of neutral clusters with kinetic energy of 120eV corresponding to their ejection speed. The peak around 5 A in G (γ), which indicates the multiple coupling of Fe atoms, reduces to zero together with the Gd/Fe ratio equal to 1. Spin waves were observed in the perpendicular FMR spectrum. The caluculated gand A values of the film were determined to be 1.67 and 0.35 × 10-6erg/cm, respectively.
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